Boiler-tube cleaner.



PATENTED FEB. 26, 1907. R. HERMAN.

BOILER TUBE-CLEANER. APPLICATION FILED DEO.22, 19'05.

- llllllll T 0 all whom it may concern.-

. February 10, 1905, and

I UNITED s Arns njr-ENT OFFiCE.,,

RAPHAEL HERMAN, OF DETRo1r,'MIcI-IIGAN.

BOILER-TUBE CLEANER.-

' Specification of iletters Patent.

. Patented Feb. 26, 1907'.

Application filed December 22, 1905. Serial No. 292.895.

I 3e it known that I, RAPHAEL I-Inmmiv, a citizen 'of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented a new and useful Improvement in Boiler-Tube Cleaners, of whichthe following is a specification.

This invention relates to ti at type of steamboiler tube or finecleaners which delivcr a blast of steam through the ilues for removingthe soot therefrom and carrying the some out through the chimney.Bcilrr-tube cleaners' of this character are shown in United StatesLetters Patent No. 720,252, dated June 13, 1905.

The object of this invention is to simplify and improve theconstruction, reduce the cost, and also increase the elliciency of thisstyle of tube-cleaner.

In the accompanying dra\\-'ings, Figure 1 is a fragmentary longitudinalscctiennl elevation ofthe rear part of a statiomn-y boiler- Frovrdcdwith 1ny 'nnpr ,\-'cd tube-cleamtr.

and separated therefrom by an intervening smoke-box orcombustion-chainibvr b.

C represents the stationary casing on tubula'r shell of thetube-cleaner, which is arranged horizontally in an opening extendingthrough the rear wall B and opening at its inner end into thecombustion-clnnnlu-r opposite the center of the ilue area. Near itsouter end the casing is provided with a hztcrsl branch,

E represents a nozzle of cylindrical term which is arranged in the innerpart of the 01..-

mg and through which the steam is deli v: rod into the boiler-tubes.This nczzle'is capable of reciprocating in tiu-. c-::si|1g f. 1' movingits front or discharge end beyend ti'o casing while in use'or retractingthe same \\'iti. in the casing, so that it will not be blll'llt'tl hilenot in use. The nozzle is alsocapable of retation in the casing, so asto direct the steam 793,834, dated Fig. 4 is .and directing issuing fromt-he front end successively into all cf'thc'ilnes.

F represents a stem, rod, or her whereby the nozzle is shifted. This rodis arran ed axially in the casing and stuiling-box f at the frontcndthereof. At its inncr end the shifting-red F is connected by ascre\\-"jcint or otherwise with the hub g of a spider or bridge, thearms 9' ofwhich connect said hub with the. inner or rear end of thenozzle.

'lhenczzle is rotated by a crank or handle II, secured to the outer endof the shiftingrod, and the same is ncrmall'y held in its retractcd orinoperative position by meansv of a spring 'i, surrounding theshifting-rod and hearing at its opposite ends against said stnti in gboxand handle. The forward movement of the nozzle is limited by anexternal.

shoulder j thereon engaging with an internal shoulder I: in the bore ofthe casing.

1n the use of the tube-cleaner the valve (1 is opened, causing theincoming steam by impinging against the head L at the front end of thenozzle to automatically project the same into its foremost or operativeposition, :1s indicated by dotted lines in Fig. 1,'

ouilet-open ings in said head into the adjacent boiler-tubes.

The nozzle and the head and spider at its opposite ends are formedintegrally, preferably by castin them in one piece,'as shown,

thereby simplifying the construction, re ducing the cost ofnnnntfacture, and avoiding liability of parts becoming loose andimpairing the working of the cleaner.

Upon closing the valve (1 and shutting oil the supply of steam thenozzle,-w lnch 18 now relieved from forward pressure, is retracted 5automatically by the spring 1 lnto its rearmost position, as shown 111full lines in Fig. l,

I in which it is protected from the destructive winch 18 connected witha st inn-supply pipe I D, containing a hand-rnlve d.

effects of the heat in the con'ibustion-cha-inber.

The steam-outlet is at the front end of the mo nozzle, as heretofore.constructed, consisted of an eccentric opening or radial slotformed inti :0 head of the nozzle, whereby the steamjel'js concentrated upon anumber of fines at a time, and all of the flues can be successively x05operated upon by rotating thenuzzle. In practice it has been found thatthis construction does not spread the steam over a. su lieiently largearea at one time, nor is the efl'ect of all of the passes through a 66the steam issuing from the v parts of the steam-jet on no 1 aperturesare preferably of cylindrical form,

those openings which are nearly parallel with -the fines are not cleanedas thoroughly as of the steam delivered by the several jetilan e. T isfian e is embedded or built I in place.

the fines or tubes uniform, so that some of others. To overcome thisdifficulty, the head L of the nozzle is provided with a plurality of jetopenings or apertures Z, which are. all arranged obliguely to the axisof the nozzle and in position to deliver the jets of steam toward oneside of its center. These jet-- and have their was arranged at differentangles which diverge forwardly, so that each jet will cover a certainflue area" independent of the other jets, thereby causing the severaljets to direct the steam at a uniform pressure over the fines which areunder operation and effectually cleaning the same. In order to maintainthis uniformity in the pressure openings, the length of these openingsmust be the same, and the inlet and outlet ends of each opening must besubstantially at right angles to the axis of the opening. To secure thisresult, while retaining the jet-apertures at different angles, the headL of the nozzles is curved or inclined backwardly from one side to theother, so that it is oblique to the axis of the nozzle, and the head ismade of uniform thickness. As shown in Fig. 2,

the axis of the nozzle are arranged in the foremost part of the head,while the opening arranged at the greatest angle to the axis of thenozzle is arranged in the rearmost part of the head. I

' For the purpose of holding the shell securely agaii'ist axial 'orlengthwise displacement in the opening of the rear wall of the'combustion-chamber the shell is provided near its front end with anexternal projection m, having rel crably the form of an annular into thebrickwork of said rear wall, forininu, an anchor which effectuallyretains the shell In addition to the anchoringflange m the shell isprovided with the usual external annular flange m near its rear oron torend, which is fitted against the outer side of said wal l.-

When the combustiomchambcr is comparatively deep, the front end of theshell may be arranged flush with the inner side of the rear wall of thecombustion-chamber and still permit the nozzle when projected androtated to reach over the entire tube area. \(Vhcn, however, thecombustionchaml er isverynarrow,suchan arrangement of the shell is notpermissible, because under 1 these conditions the nozzle when projectedwould be so near the rear end of the-boiler that the angle at which thesteam issues from the jet-openings of the nozzle would not reach theoutermost tubes. In order to compensate 1" or the narrowness of thecombustion-chamber and enableall of the fines 'o' be reached by thesteam-jets,

the shell of the cleaners is secured in'the wall opening with the innerend thereof arranged outwardly beyond the inner side of the wall and attuc base of a recess, n in said wall. This recess is conical andflaresinward] orforwardly from the front end of the she I to the inner side ofthe wall. In order to pro- I duce a finish of their recess and sustainthe brickwork around the same, as well as directing any stray steamtoward the fines, this recess is lined by a conical guard or hood 0,having a collar'p at its inner, or 'small'end which surrounds thefrontendof the: shell, and an annular groove or channel p, fittingaround the anchor m, while its outer or larger end is provided with anannular flange g, which is fitted against the inner side of the rearwall of the combustion-chamber, as

shown in Fig. 1. The hood is preferably di- 2. A boiler-tube cleanercomprising a noz-- zle'having a transversely curved or lnchned head atits front end and a plurality of outletopenings in said head which arearranged at an angleto the axis of tlie nozzle, substantially as setforth. Y 3. A boiler-tube cleanerconiprising a nozzle having a head atits front end which curves or inclines rearwardly from one side of thenozzle to the other, and having a plurality of openings-arranged in saidhead and divcrgl forwardly, substantially as set forth.

41 A boiler-tube cleaner coirprisim a noz= zle having a head at itsfront end which curves or inclines rearwardly from one side of thenozzle to the other, said head being of uniform thickness and providedwith a plurality oi cylindrical outlet-openings the axes of whichdiverge forwardly, substantially as set forth.

5. A boiler-tube cleaner comprising a stationary tubular shell, atubular nozzle capa: blr'yol longitudinal and rotary movement in saidshell and provided with a dischargeopvning, and mm: us [or operating,said nozzle, substantially as set forth.

(i. A boiler-tube cleaner comprising a stationary tubular shell, atubular nozzle capable of longitudinal and rotary movement in said shelland provided at its front end with a head having a discharge;o ening,and an operating-rod connected w t 1 the rear end of said nozzle,substantially as set forth.

7. A boiler-tube cleaner comprising a tubular shell or casing adapted tobe arranged in an opening in the rear wall of a'conibustion-chamberandhaving an external projection which is adapted to be anchored in theinner said Wall, and a discharge-nozzle eornmuni eating with said shell,substantially as set forth.

8. A boiler-tube cleaner comprising a tu bular shell or casing adaptedto be arranged in an opening in the rear Wall of a combustion-chamberand having an annular external flange which is, adapted to be anchoredin said Wall, and a discharge-nozzle communicating with said shell,substantially as set forth. 9. A boiler-tube cleaner comprising atubular shell or ca'singadapted to be fittedin an opening in the rearWall of a combustionchamber, a discharge-nozzle communicating with. saidshell and a diametrically-dividcd conical hood arranged in the conicalinner end of said opening and having a collar surrounding said casing,and an annular flange arranged on said casing engaging with an innulargroove in the collar oi said hood, fsubstantially as set forth. i

'10. A boiler-tube cleaner comprising atubular shell or casingadapted tobe fitted in an opening in the rear wall of a combustion- I chamber, adischarge nozzle communicating with said shell and a conical guard orhood surrounding the front end of said'shell and fitted in acorrespondingly-shaped reccss on side of said Wall, substantially assetforth. i

11. A boiler-tube cleaner comprising a tubular shell or casing adaptedto be arranged in an opening in the rear Wall of a combustionchamber andhaving an external flange enchored in said wall, adischarge-nozzlecommunieating with said shell, and a conical hood orguard arranged in a correspondinglyshaped reccss on the inner side ofsaid Wall and provided With a central collar which is mounted on theshell in front of said annular flange, substantially as set forth.

12. A boiler-tube cleaner comprising a tubular shell or casing adaptedto be arranged in an opening in the rear Wall of a combustionchanqberand having an annular external flange which is adapted to be anchored insaid. Well, a discharge-nozzle con'iniunicating :Wl l)l1'S:l ,ld shell,and a diametrically-divided hood having aconical inner portion Wliichits a corrrspondingly-shaped recess on the inner side 01 said Wall and acylindl ical inner portion surrounding said shell and having a channelwhich receives said flange, substantially as set forth.

W itness my hand this 9th day of December, 1905. I

JnAPnAEL HERMAN.

- Witnesses:

J. C. BILLINGHAM, ERED G. DEWEY.

